The secrecy of the investigation meant that we did not receive answers to many questions, and the cognition we obtained did not broaden our horizons, assessed the president of the parliamentary committee on administration and interior affairs, Wiesław Szczepański, after the three-hour secret gathering on the grenade launcher detonation at the Police Headquarters. This is not the result of the gathering MPs were hoping for. Especially that the talks were kept secret at the request of the Ministry of interior Affairs and Administration itself.